Internal C-Mod MSE analysis reports

 

No

Topic

Date

Comment

 

 

1

F_circular but not RA changes during high-Prad plasmas

August 2012

 

2

Validation of filter wavelength/temperature for filter_panel_2012_new

August 2012

 

3

Polarization fraction calculation as implemented in plotmse

August 2012

 

4

Scatter in half-beamlets is properly described by standard error for half-beamlets

July 2012

 

5

Validation of filter-heater mapping

August 2012

 

6

Proposed beam-into-gas conditions

July 2012

 

7

Resolution of verification of ISC software in plotmse/mse_analysis

July 2012

 

8

Statistical scatter in ‘pa’ as a function of atot during ISC shots

July 2012

 

9

Beamlet standard error works ok for scatter in ISC as well as beam-into-gas

June 2012

 

10

Oscillation of DNB current and effect on Atot and measured angles

July 2012

 

11

Proposed MSE filters for dnb operation at 45 kV

August 2012

 

12

Magnitude of Atot with weak DNB compared to June 2012

August 2012

 

13

Spectral transmission of MSE optics is pretty flat

August 2012

 

14

Polarized transmission of MSE optics

August 2012

 

15

Detailed analysis of MSE data from June 6, 2012

August 2012

 

16

Detailed analysis of MSE data from June 12, 2012

August 2012

 

17

Proposed MSE filters for dnb operation at 47 kV.

August 2012

 

18

Error bars are 0.5-0.6 degrees with reduced-performance DNB

August 2012

 

19

Size of error bars at NeL=4e19 versus 7e19

August 2012

 

20

MSE spectrum shifted to larger wavelength by 0.2-0.4 nm (data from August 21)

August 2012

 

21

Scaling of atot, signal-to-noise, and error bars with plasma NeL

August 2012

 

22

Troubleshooting DTACQ/APD problems on MSE channels 4 and 5

August 2012

 

23

Scaling of error bars with density for NeL scan on August 22

August 2012

 

24

Cross-talk between MSE channels is about 1.5e-4

August 2012

 

25

We replaced the correct APD for faulty MSE channel 5

August 2012

 

26

Tracking changes in the diagnostic using individual LEDs in the ISC system

August 2012

 

27

Can’t use beam-into-gas data from 7/8/31 to infer loss of dnb intensity within beamline

Sept 2012

 

28

List of MSE-related C-Mod run days

Sept 2012

 

29

Simple analysis of filter-shift experiment on Sept 6

Sept 2012

 

30

Scaling of atot with density

Sept 2012

 

31

Good LH power scans on June 1, 2012

Sept 2012

 

32

Analysis of MSE error bars for angle measurements

Sept 2012

 

33

Careful analysis of MSE data from September 12, 2012

Sept 2012

 

34

MSE is stable over long periods when nothing is changing

Sept 2012

 

35

What is the correct aperture for the polychromator?

Sept 2012

 

36

Analysis of September 26, 2012 including beam-into-gas

Oct. 2012

 

37

A detailed look at the PEM phase issue

Oct. 2012

 

38

MSE view has not moved across the 2012 or across a run day

Oct. 2012

 

39

Phase analysis for 2012 run campaign

Oct. 2012

 

40

Beam is not a problem for MSE

Oct. 2012

 

41

Computed effect of non-ideal mirror properties on MSE response

Oct. 2012

 

42

Confirmation of error bar analysis during quiescent ISC operation

Dec. 2012

 

43

Slides that explain how we compute error bars for angles measured by MSE

Dec. 2012

 

44

Variability of polarization-angle measurements during beam-into-gas

Dec. 2012

 

45

Scaling of MSE measurement error during invessel calibrations

Dec. 2012

 

46

Comparing MSE to EFIT during Ip ramps on May 16, 2012

Dec. 2012

 

47

Phase, Frequency, and Retardance for Dec 2012 standard angular calibration

Dec. 2012

 

48

Fixed phase analysis of December 2012 calibration

Jan. 2013